These juggling balls are in the 'hacky sack' style, meaning a soft round bag filled with pellets, they are much easier to throw & catch, & wont roll away...perfect when learning the skill! Juggling is a great way to improve hand eye coordination, & practice concentration, & is suitable for all ages, it's fun & educational for kids, & keeps the grey matter of grown ups ticking along too. A great stress relief activity, along with a portable workout, that is genuinely fun to practise, & entertaining for spectators, A great little activity for the beach, at festivals, or in your own back garden. Suitable from 3+ years 3 balls included Diameter roughly 5.5cm